Hello new here but i got a problem

[SenseiKiba]

Hello guys im SenseiKiba
its my firstime here i really want to join OP Skyblock
but it saying Unsupported Protocol 340 Please help me
im using Version 1.12.2 Optifine

 

[zquizle]

Try to use 1.8.9

 

[Not_ezEscape]

It probably means that you are not using right version, try to use lower version such as 1.8

 

[ZeloTess]

Change the version for sure

 

[zquizle]

Change the version for sure

Please stop Post Farming. Many answers are given and you copy only the same Tipp

 

[OPRaze]

I agree with the last answers, you should try to use a version between 1.8 and 1.9